Honing and stropping device.



A. K. HANSON.

HONING AND STBOPPING DEVICE.

APPLIUATION TILED AUG. 30, 1911.

1,027,045. Patented May .21, 1912.

WWW/WW ///2 h UNITED ENT OFFICE. V

ADOLF K. HANSON, 0F. MILWAUKEE, wIsCoNsIN, ASSIGNOR, BY DIRECT AND M 'sNE ASSIGNMENTS, TO THE MACHINERY & SPECIALTY COMPANY, 01* MILWAUKEE, WISCONSIN, A CORPORATION or WISCONSIN.

HON ING AND STROPPING DEVICE.

Specification of Application filed August 30 To all whom it may concern:

Be it known that I, Anonr K. IIANsoN, of Milwaukee, \Visconsin, have invented a Honing and Stropping Device, of which the following is a specification.

This invention relates to devices for honing and stropping razor-blades, more especially theblades of what are known as safety-razors.

My device is of that class wherein a revolving sharpening-member is brought in contact with the blade, and is revolved by rolling the device as a whole, which is provided with carrier-wheels, along a flat surface, and the object which I have in view is to improve the construction of this class of devices, first, by providing means whereby in a sharpening device of this class, the speed of movement of the sharpening-member is greater than that of the travel of the device as a whole; secondly, by providing means for changing or reversing the direction of the sharpening-member with respect to the edge, so that it may be used either for honing or stropping, as desiredgand generally by providing a more simple, effective and versatile form of rotary sharpening-device than at present exists.

An important feature of my inventionconsists in the means.which I provide for increasing the rate of rotation ofthe sharpening-member, or multiplying the, speed thereof,'which is important fonth'e proper, sharpening of the bladet-for, as those skilled" in the art are well aware, a-firieiede can} better be obtained by' a high speed pressure, than by a lowspeednhd 'strong' pressure.

Another important feature of "my inve'n; tion consists in the means pr'oviddfor reversing the direction of the sharpeningmember with relation to the blade-edge, which permits of a hone as Well; as a strop being used; for as is Well understood. by those skilled in the art, a hone can only be properly used upon a razor-blade by moving the surface thereof toward the edge, whereas a stropping-surface must be moved from the edge.

The screw-device, by means of which the sharpening-wheel is conveyed to ohe end or Letters P t nt. Patented May 21, 1912-.

,' 1911. Serial No. 646,795. I

the other of the blade, is not claimed herein, as it is not my invention.

Other features of my invention consist in the constructions and combinations which will be hereinafter explained and particw larly pointed out in my claims.

The most improved form of my invention is illustrated in the accompanying drawings, wherein-=- Figure 1 is a front view of the complete apparatus; Fig. 2 is a side-view thereof; Fig. 3 is a vertical-section on the plane of the main axis of rotation; Fig. 4 is a longi-, tudinal central section; Fig. 5 is a planview; Fig. 6 is a perspective view of the link for the reversing-gear; Fig. 7 is a sideview of one end of the frame separately; Fig. 8 is a longitudinal section on a large scale through the mounting of one of the reversing gear-wheels; Figs. 9 and 10 are longitudinal sections on the plane 910, looking from the inside, and showing the reversing-gear in its two positions as used for the honing and stropping devices respectively; and Fig. 11 is a perspective view of the end of-the main axle on the drivingwheel side.

The reference letters refer each to the same part in each figure'of the drawings.

The frame of the devicecon-si'sts of a strip of sheet-metal A, the two end-portions a and a of which are bent at right angles with the middle portion or bar, and form the supports for the main shaft or axle B fandthe other operative parts of the apparatusf'a-t t-he center of the middle bar is "mounted a handle-member C which maybe provided with a screw-boss 0' screwing into athreaded hole inthe .member A, or otherwise suitably attached thereto. 1 The ends of the end-portions a and a are-formed with slots a opening on'.the bottomf. side and destined to receive the reduced stud-ends I)" of the main axle B;-one ofuwhichends is provided with two flats b'-- on the opposite sides fitting between the sides of the slot a to prevent it from rotating, the axle being thus held stationary. The. studs 11 are screw-threaded to receive nuts D, and fiat-so. nuts are preferably formed with sligh I lindrical bosses d on their inner hare...

, provided with a helical screw-thread b. On

this threaded port-ion is rotatably mounted the sharpening-wheel E, the same being pro- Vided with an internal-thread e, which engages the thread 6 so that the rotation of said wheel is accompanied by its longitudi nal movement on the axle. This rotative movement is accomplished not directly by the rubber-tired carrier w'heels F, G, as' in many of the heretofore invented sharpeningdevices, but through a driving-frame H which is geared to one of these wheels. The driving-frame H comprises preferably a hub h turning on the'right-hand bearing and carrying a pair of longitudinal bars 72 whichpass through arcuate slots e in the sharpening-wheel E; these slots providing for a certain amount of lost motion in the reversing ot' the directionof the sharpeningdevice. However, it is not necessary to provide more than one bar h and I may successfully operate the device with a drivingframe having only, one bar If, or I may provide more than two bars without interfering with the principleinvolved.

The driving of the trains 'H is effected by one of the carrier-wheels only, to wit: the wheel F, -coaxial with which is mounted a spur-gear I, said gear meshing vith and driving a pinion J' on a counter-shaft K, which is journaled in bearing apertures (t in the portions a, a of the frame. The pinion J drives the shaft K, which in --turn drives a spur-gear L mounted on its opposite end and meshing with and driving a pinion M turning on the journal W. The pinion M is directly connected with and drives the hub h through a sleeve m on which both are mounted, leaving room between them for the carrier-wheel G, which turns loosely thereon.

Above the sockets ofthe axle B the frameends are extended to form standards a in the upper ends of which are apertures a a The aperture a forms a pivot-bearing for the member X supporting pintle n on one end 0t the blade-holder N, and the other aperture a is threadedto receive a screwstem 0 carrying a milled head '0 on its outer end and a pivot 0 on its inner end for the.

other end of the holder N, which is provided with a cylindrical socket n into which said pivot extends. The specific form of holder here illustrated, as aforesaid, is not necessary to the invention as here churned, the

razor-blade P. On the left-hand end of the -holder, and in the plane of the gear I'is a pinion S turning freely on said end, a frictional drive between it and the holder being established by a coiled spring T under compression between the pinion and the washer t, and adjustable by a stem X the thread 0: i The of which engages in the pivot t. piston S is operatively connected with the gear I through the medium of a reversinggearing, which consists of two pinions U and V mounted on stub-shafts u and v,

a respectively in the standard a These shafts are connected together by a link W, Fig. 6 in such manner that they ,are'per manently in mesh with each other, and a pair of nutsu and o are screwed onto the threaded-ends 'v of the stub-shafts, said shafts being shouldered and headed as shown in Fig. 8. The slota is described on an arc concentric with the axis of the gear I,

and so placed that the pinion U is permanently in mesh therewith; wh.ile;the slot a is so the pinion V is in mesh with the pinion S, and when at the other end of the slot is out of mesh therewith, while the pinion U has been advanced to a position in which it meshes with said pinion S, as shown in Fig. 10. It will be seen that the effect of this gearing is that when it is in the position of Fig. 9 the pinion S-will be driven in the reverse direction from the pinion I and consequently the surface of the sharpeningwheel will move toward the edge of the blade; and when the reversing-gear is in the position of Fig. 10, the pinion S will move in the same direction as the gear I, causing the edge to be sharpened to lie upon that side of the sharpening-wheel which is movlaced that when at one end of the slot ing away from said edge. When therefore in by the nuts a '0 or one of them, and" when it is desired to hone the blade, the

'stroppi1ig-wheel is removed and replaced by a wheel with a honing surface, and the reversing-gear is set in the opposite position.

The position shown in the principal figures" of the drawing and the directional arrows correspond to the honing movement.

As all the driving is done from the lefthand carrier whcel F, it is desired in operating the device to bring the pressure prin-v cipally upon that wheel, and, therefore, a

tab a is formedupon the frame A at the the left-hand side of the handle C, and bent at rightrangle's to form a thumb-rest. The f effect of this is that in which ever hand the instrument is held, the thumb'is invariably 7 brought upon this rest, which causes the principal pressure upon the wheel F.

. From the above description it will be readily seen that my invention is not limited 6 to special forms and mechanical constructions such as I havehereinabove shown by way of illustration, but that the principles thereof are expressible in a variety of ways as'will be well understood by those skilled in the art; therefore the scope of my claims to support the device and roll 11 on a plane surface, .a sharpening-wheel an means for holdinga blade in proper sharpening relav tion thereto, and a multiplying-gearing connecting said sharpening-wheel with one of said carrier-wheels and adapted to drive said sharpening-wheel at a higher relative speed ,26 of rotation.

- 2. In a sharpening-device for razor-blades, the combination of carrier-Wheels adapted to support the device and roll upon a lane surface, a sharpenin -wheel mounte co- 80 axiall with one of said carrier-wheels, and

a mu tiplying-gearing operatively connecting said last-named carrier-wheel with said sharpening-wheel and producing a relatively higher rate of rotation in the latter.

3. .In a sharpening-device for razor-blades, the combination of a pair of coaxially mounted carrier-wheels one of which is a driving-wheel, a gear-wheel mounted coaxially therewith and driven thereby, a counter- 40 shaftcarrying a .pinion meshing with said first-named gear-wheel and carrying also another gear-wheel, a second pinion mounted coaxiall with said carrier-wheels and meshing wit said last-named gear-wheel, and a sharpening-wheel mounted coaxially with said carrier-wheels and operatively connected with said last-named pinion.

4. In a sharpening-device for razorblades, the'combination of a fixed axle provided with a helical thread and with journals at its ends, a pair of carrier-wheels mounted and turning on said journals, one

of said wheels acting as a driving-wheel, a

. sharpening-wheel turning on said axle and having an internal-thread engaging the thread thereof, a drivin -hub turning on one of said 'ournals and'a apted to rotate said sharpening-wheel while permitting its axial movement, and a gearing operatively con- I necting said driving-wheel with said hub and adapted to rotate it at a higher relative rate of rotation.

5. In a sharpening-device for razorblades, the combination of a three-sided fi fframe having a central handle, a pair of carrier-wheels mounted on said frame and only one of which acts as a driving-wheel, a rotary sharpening-device operatively connected with said driving-Wheel,- and a;

thumb-rest on said frame at the same side of said handle as said driving-wheel.

6. In a sharpening-device for razorblades, the combination of a rotary sharpening-member, means for rotating the same,

' a blade-holder, means 'connecting said bladeholder with said driving-means and causing' it to rest upon one side or the other of the sharpening-member in accordance with its direction of rotation, said connectingmeans being reversible whereby the side on which said blade rests for any given direction of rotation is reversed.

7. In a sharpening-device. for razorblades, the combination of a rotary sharpeiiing-member, a blade-holder adapted to hold a blade in proper sharpening relation with said member, whereby the edge of said blade comes on one side or the other of said member and in juxta-position thereto, and a reversible gear ng o eratively connecting said member and hol er whereby the side of the member upon which said blade is pressed for a given direction of rotation is reversed.

8. In a sharpening-device for razorblades, the combination of a rotary sharpening-member, a blade-holder adapted to hold a blade with its edge in juxta-position tothe sharpening surface on either side of.

said member, a ear-wheel frictionally connected with sai tion to cause a pressure of said holder against said member in the corresponding direction,- a second gear-wheel operatively connected and rotating with said member, and a pair of intermediate gear-wheels adapted to two positions, in one of which one of said intermediate wheels directly meshes. with both said first-named wheels and in the other one of said intermediate gear-wheels meshes with one of said gearwheels and the other with the other, whereby the relative direction of rotation ofsaid firstnamed ;two gear-wheels may be reversed. I

9. In a sharpening-device for razorblades, the combination of a pair of carrierholder so as by its rotawheels, one of which acts as a driving-wheel side or the other of said, sharpeningmem-t 1,342

and carries a gear-wheel, a-rotary sharpening-member mounted coaxially with. said driving-wheel, gearing connectingv said sharpening-member with said gear-wheel and'acting' to raise the speed of rotation of vthe same, a reversible blade-holder adapted to press the edge of theblade against either side of said sharpening-member, a second gear-wheel frictionally mounted on said holder in such manner as b its rotation to cause a pressure of said h der against one side or the other of said sharpening-member, and a reversing-gear comprising two intermediate gear-wheels permanently meshing with each other and one of which permanently meshes with one of said firstnamed gear-wheels, said intermediate gearwhee-ls being lat'erally shiftable and having two positions, in one or" which said firstnamed intermediate gear-Wheel engages the gear-wheel with which it is not permanently engaged. and the second intermediate gear:

wheel runs idle, and in the other of which positions said last-named intermediate gear:

wheel meshes with the gear-wheel with which said first-named intermediate .gearwheel is not permanently engaged.

- vIn witness whereof I have hereuntoset my hand in the presence of two witnesses. I

ADOLF K. HANSON. 3

Witnesses: .f v

GEoRoE W. COLLES, CHARLES M. SCANLAN. 

